The white-tailed deer is smaller than other North American deer breeds; its coat is reddish-brown in the summer and grayish-brown in the winter. Some sub-species of white-tailed deer are endangered, but as of 2015 the North American population is growing.
The white-tailed deer gets its name from the white underside of its tail, which it exposes when in danger. It is primarily nocturnal and grazes at dawn and dusk, eating grass, leaves and other plants. During warm weather it typically inhabits fields and meadows, and in colder weather it moves to the forest. It runs up to 30 miles per hour and can jump as high as 10 feet and as far as 30 feet. It uses its speed to outrun its predators, which include bobcats, mountain lions and coyotes.
The male white-tailed deer has prominent antlers in the summer and fall, but loses them during the winter. The antlers regrow each year. It uses its antlers to fight with other deer during the mating season. The female deer's pregnancy lasts approximately seven months, and it gives birth in the late spring. As a fawn, the deer has a reddish coat with white spots, which helps camouflage it in the woods.